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35 Cards in this Set
- Front
- Back
A DNS server that holds a complete copy of a zone's resource records
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authoritative server
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DNS servers that keep a database of addresses of other DNS servers managing top-level domain names
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root servers
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An A record used to resolve the name in an NS record to its IP address
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glue A record
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servers preconfigured on Windows DNS servers that point to Internet root servers
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root hints
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A DNS server to which other DNS servers send requests they can't resolve themselves
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forwarder
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A DNS server to which other DNS servers send requests targeted for a specific domain
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conditional forwarder
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A query in which the DNS server processes the query until it responds with an address that satisfies the query or with an "I don't know" message
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recursive query
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A DNS client that sends a recursive query to a DNS server
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resolver |
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A type of DNS query to which a DNS server responds with the best information it has to satisfy the query
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iterative query
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A recursive query is...
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A query in which the DNS server processes the query until it responds with an address that satisfies the query or with an "I don't know" message. The process might require the DNS server to query several additional DNS servers.
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For several hours now, your IT staff has been trying to troubleshoot an issue on AppSrv1. AppSrv1 uses an application that requires it to access an SQL database on a server named DBSrv1 but recent changes in the network topology have outdated previous DNS entries. Initially, the problem is believed related to the DNS database, but after using nslookup, you find that the DNS entry is correct. AppSrv1 can reach the DBSrv1 server manually by IP address, but when using a name, it resolves to the wrong machine.
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Someone added a static entry for DBSrv1 in the hosts text file, which is now outdated
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If multiple servers are specified in the forwarders tab of a server's Properties, what happens if a query is made and none of the forwarders provide a response?
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A normal recursive lookup process is initiated, starting with a root server
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Increased network usage has inspired your staff to install a new DNS server. After much consideration, you have decided to also make the new server a domain controller as well. One of your interns is curious as to what benefit this would provide to DNS over simply making the DNS server a member server.
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The AD-integrated domain DNS zones will be created automatically
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Last year you configured a conditional forwarder for a specific domain on your network. This year, after several major changes to the network, you notice that the conditional forwarder is no longer reachable. You find out that the conditional forwarder's address changed, and now to continue using a conditional forwarder, you must manually change the IP address on all servers that use it.
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Use a stub zone
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Root hints data comes from what file?
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Cache.dns
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What does round robin do?
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Creates a load sharing / balancing mechanism for servers that have identical services, such as two servers that host the same website
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What information does a resource record of type MX contain?
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Address of an e-mail server
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What ipconfig option will display the contents of the hosts file, as well as the local DNS cache?
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/displaydns
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What is the default no-refresh interval set to on DNS record timestamps?
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7 days
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What type of information does a resource record of type A contain?
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Host
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When might you use a forwarder?
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When an internal DNS server receives queries to resolve domain names on the Internet
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Where are conditional forwarders configured in Windows Server 2008?
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Conditional forwarders node in DNS Manager
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Which of the commands below can be used to test DNS queries with the default DNS server or a specific DNS server on a Windows computer?
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nslookup
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Which of the following is not a valid option when configuring packet contents to be logged in the Debug Logging tab?
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Outgoing
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Which of the following is not part of a State of Authority record?
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maximum TTL
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Which one of the following options, when added to dnscmd.exe, will allow you to create a new zone?
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/ZoneAdd
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Windows Internet Name Service (WINS) is a legacy name service used to resolve....
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NetBIOS names
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With forwarders and/or conditional forwarders configured, the DNS server attempts to resolve DNS queries in this order:1. From traditional forwarders (if configured)2. From conditional forwarders (if configured and the domain name matches)3. From locally stored zone resource records4. From the DNS cache5. Recursively by using root hints (only if no traditional forwarder is configured)This list has been slightly rearranged. What entry number should be switched in order to make this list accurate?
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Switch #3 with #4
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You have recently set up a new domain controller and DNS server responsible for a large network. Almost immediately, you notice that every time a user attempts to make use of a resource on a server in your partner organization's domain, Example.net, DNS requests end up performing a recursive query. Rather than continue to allow DNS requests to be processed this way, you would like to make use of a DNS server in Example.net's domain that you have access to via a LAN connection.What can you configure to have the DNS server in Example.net's domain receive DNS queries from your network, but only ones that are related to Example.net's domain?
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Conditional Forwarder
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You will want to use a forward lookup zone when you need a zone that...
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contains records to translate names to IP addresses
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By default, stale resource scavenging is enabled.
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False
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Glue A records will also appear as an A record in the zone database.
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False
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If all zones are hosted on Windows domain controllers and are Active Directory integrated, there's no need to configure zone transfers because Active Directory replication handles this process.
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True
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Using a stub zone can result in faster recursive queries.
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True
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When DNS is installed on a new domain controller, AD-integrated zones are replicated to the new DNS server automatically.
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True
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